Weather stripping for windows



WEATHER STRIPPING FOR WINDOWS Filed Jan. 4, 19s:

INVENTOR {fax M MI 1 I ATTORNE a portion of the construction shown inFigure 2.

Patented Dec. 19, 1 933 UNITED STATES PATENT OFFICE This inventionrelates particularly to the weather stripping of counterbalanced windowsof the general type of that shown in Letters Patent of the United StatesNo. 1,864,745 dated June 28, 1932, granted to Unique Balance Company asassignee of Algot Larson, but in which the counterbalanced mechanism isenclosed, in part at least, within a cylindrical tube which is seated ina vertical recess ineach side of the window sash. In accordance with theinvention there is interposed between the window sash and the face ofthe casing member a metal weather strip which is so formed as to beresilient and to conform in part to and fit against the tube andpreferably also to make contact with the sash itself on lines atopposite sides of the recess in the sash in which the tube is located.The

weather strip is also formed so that it is held in place mainly by amovable member, such as the parting strip, in the case of the uppersash, and the stop bead in the case of the lower sash, a light nail attop and bottom being desirable for security.

The invention will be more fully explained hereinafter with reference tothe accompanying drawing, in which:

Figure 1 is a view in sectional elevation, broken out to save space, ofa window equipped with the improved parting strip.

Figure 2 is a view in horizontal section with the two sashes, upper and.lower, moved into such relative position that both are cut by the planeof section.

Figure 3 is a detail view in isometric projection on a larger scale of aportion of the weather strip for the upper sash.

Figure 4 is a view similar to Figure 3 of a portion of the weather stripfor the lower sash.

Figure 5 is a detail view on a larger scale of In the embodiment of theinvention illustrated the window frame is of such construction, havingat each side a casing member a and having a head 12 and a sill c. Theface d of the casing,

at each side of the window, inset somewhat from the outer member of thecasing, receives the usual parting strip e and the usual stop bead fwhereby there are formed the channels in which the sashes are guided. Inthe construction shown each side of the upper sash gand of the lowersash h is formed with a vertical recess 2 and k, respectively, in whichis located the tube 1 which, in the improved sash balance mechanism ofthe type shown in said Letters Patent, receives a torsion spring m whichcoacts with the spiral m and the nut m The improved weather strip 11.for the upper sash, made of any suitable resilient metal is formed asshown clearly in Figure 3, with a central concaved portion 11. whichconforms with and fits-upon the tube Z, having a substantial area ofcontact therewith. At each edge of the curved portion n the strip isbent away from the sash and toward the center line of the strip, as at nn and is then flared outwardly and inwardly from the central portion, asat n M, to give the strip the desired resilience. One edge portion ofthestrip is bent away from the sash to form a flange n to be receivedbetween the parting strip 6 v and the side wall of the recess in themember (1, in Y which it is placed, while the other portion 11. may belapped, as at W, to bear. against the face member d of the casing. Theweather strip 0 for the lower sash is similarly formed, having a centralconcaved portion 0 conformed to the tube 1 of the balance mechanism,having the flared portions 0 and 0 which give resilience, and having atone side a flange o to be received between the stop bead ,f and the jambmember d and having the other edge lapped, as at 0", to bear against inaddition to that afforded by the conforming of the middle portion of thestrip to the tube with which it cooperates.

The resilient character of the weather strip causes it to bear with aconstant pressure against 9 the tube of the balance mechanism andthereby to assure good contact and also enables it to compensate formoderate variations in the width of the sash.

It will be understood that the form of the,

weather strip may be varied to suit different conditions of use.

I claim as my invention:

1. The combination of a window frame having a face plate, a window sash,a tubeinterposed between the sash and the face plate, and a resilientweather strip interposed between the tube and the face plate and havingits central portion conformed to the tube.

2. "The combination of a window frame having central portion conformedto the tube and having a flange to be engaged by said movable member.

4. The combination of a window frame having a face plate, a window sashvertically recessed in its edge, a counterbalance tube located in therecess of the sash, and a resilient weather strip interposed between thetube and the face plate and having its central portion conformed to thetube and having flared members to bear at their edges against the faceplate and to make contact with the edges of the recess in the sash.

' LORING WASHBURN.

